Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"GISAXS"”.
-
Novel analytical method for investigating compositional driven ion-induced nanopatterning of multicomponent materials
… Grazing Incidence Small Angle X-ray Scattering (GISAXS) at Brookhaven National Lab. This experiment was setup such that GISAXS scans were taken at much smaller ion fluence intervals, about 1E15cm-2 per scan. These fluence steps allow for a much more detailed investigation of the topography …
-
Self-assembly of silicon-containing triblock copolymer and terpolymers
… grazing-incidence small-angle X-ray scattering (GISAXS) measurement, the phase behavior of advanced polymer architectures can be revealed in details.
-
The Use of Synchrotron Radiation to study Overgrowth Phenomena in InAs/GaAs Nanostructures
… grazing incidence small angle x-ray scattering (GISAXS) and grazing incidence diffraction (GID) are applied to study shape, strain, and interdiffusion in self-organised grown nanostructures. The technique of anomalous x-ray diffraction at the weak (200) superstructure reflection enhances the …
-
Ausrichtung von Blockcopolymerfilmen im Elektrischen Feld: Eine In-Situ Rasterkraftmikroskopische Untersuchung
… wurde durch eine kombinierte Studie aus AFM, GISAXS, REM und in-situ Ellipsometrie ermittelt. Weiterhin wurden der Verlauf der elektrischen Feldlinien und die Feldstärke für die verwendete Elektrodengeometrie auf der Basis der Finiten-Elemente-Methode simuliert. Ferner wurde der Einfluss des …
-
Growth dynamics, charge density, and structure of polyamide thin-film composite membranes
… small- and wide-angle X-ray scattering (GISAXS and GIWAXS) were successfully used to study the supported polysulfone ultrafiltration membrane and polyamide on polysulfone reverse osmosis membrane. In the GISAXS region we used the Guinier approximation in the very low-Q region of 0.001 …
-
Functional 2D nanoparticle/polymer array : interfacial assembly, transfer, characterization, and coupling to photonic crystal cavities
… grazing incidence small angle x-ray scattering (GISAXS) and numerical simulation. By e-beam irradiation of free-standing 2D NP/polymer arrays, anisotropic nanowire arrays have been fabricated. Additionally, preliminary investigation on assembly of binary nanoparticle arrays has also been …
-
Nucleation and Growth of Calcium Carbonate and Sulfate Minerals from Solutions Close to Equilibrium
… grazing incidence small angle X-ray scattering (GISAXS). The results indicated that different organics regulated the sizes, phases, and Mg contents of heterogeneous (Cax,Mg1-x)CO3 compared with homogeneous precipitates in bulk solution. The calcium sulfate minerals scaling under close to …
-
Self- assembly of soft matter under 2D nanoconfinement
… raggi X a piccolo angolo di incidenza radente (GISAXS), permette di determinare le interazioni semplicemente comprimendo la superficie e acquisendo contemporaneamente i pattern GISAXS; ciò rappresenta la principale innovazione di questo studio. In particolare, data l'omogeneità del monostrato, …
-
Porous Graded Materials Derived From Block Copolymer Self-Assembly For Water And Energy Applications
… grazing incidence small-angle X-ray scattering (GISAXS) was employed to study the structure evolution on doctor-bladed BCP films for membrane purposes. Transient ordered structures were observed during solvent evaporation, providing insights into the membrane formation mechanism. This method …
-
Deciphering the role of surface composition and topography in self-organized ion-induced nanopatterning of multicomponent semiconductors with in-situ and in-operando metrology
… Grazing-Incidence Small-Angle X-ray Scattering (GISAXS), X-ray Photoelectron Spectroscopy (XPS), and Low Energy Ion Scattering Spectroscopy (LEISS) techniques, the effects of both cryogenic and high temperatures on ion-induced nanopatterning of GaSb, and utilized the developed in-operando XPS and …
-
Chemistry of Nanoscale Solids and Organic Matter in Sustainable Water Management Systems
… grazing incidence small-angle X-ray scattering (GISAXS) measurements suggested that SRDOM decreased iron(III) (hydr)oxide nucleus sizes and growth rates. A combined analysis of SRDOM and other proteinaceous or labile DOM (alginate, polyaspartate, and glutamate) revealed that DOM with higher …
-
Development of novel bio/nano interfaces for materials science and biomedical applications
… of which can be measured using in situ GISAXS. Assembling the core-shell nanoparticles into a 2D array potentially enables construction of a hybrid plasmonic waveguide that allows optical energy to be transported from one location to another beyond the diffraction limit. For solar energy …
-
Structural Characterization of the Interfacial Structure of the Working Electrode in Dye-sensitized Solar Cells Using X-ray and Neutron Techniques
… grazing-incidence small angle X-ray scattering (GISAXS) can be used to explore the molecular packing behavior of these three dyes on TiO2 as a function of the dye-sensitization concentration. Chapters 4 and 5 examine the relationships between the structure of the dye···TiO2 interface and the DSSC …
-
Molecular Design Of Lanthanide Binding Tag Peptides For Nanoparticle Assisted Interfacial Separation Of Rare Earth Elements
… Grazing Incidence Small Angle X-ray Scattering (GISAXS), revealing an ordered arrangement of nanoparticles at the interface and well-defined separation distances, which underpins the improved mechanical stability of the foam. The addition of the peptide to the nanoparticles also lowers the zeta …
-
The effects of thermal history and composition on the thermodynamic behaviour of helium in tungsten and tungsten-based alloys
… bubble size and a loss of number density. GISAXS analysis on the effects of annealing on bubble radius distribution produces results consistent with the TEM. An "Ostwald ripening-like" model was proposed to explain the differences in annealing behaviours of the LT and HT samples. In-situ …
-
The effects of thermal history and composition on the thermodynamic behaviour of helium in tungsten and tungsten-based alloys
… bubble size and a loss of number density. GISAXS analysis on the effects of annealing on bubble radius distribution produces results consistent with the TEM. An "Ostwald ripening-like" model was proposed to explain the differences in annealing behaviours of the LT and HT samples. In-situ …
-
Pattern Formation and Phase Behavior in PS-B-SI Containing Block Copolymer Thin Film
… PS-POSS thin film system with cylindrical phase. GISAXS experiments proved that a special metastable phase with compressed packed symmetry was found in PS-POSS thin film system with parallel cylinder morphology after solvent annealing process, and this metastable phase was found in both PS-APOSS …
-
Thin liquid films with nanoparticles and rod-like ions as models for nanofluidics
… incidence small angle X – ray scattering (GISAXS), which is a technique sensitive to the lateral arrangement of particles in confined volumes. This work provides preliminary data on a lateral ordering of particles in the film.
-
Funktionalisierte Alkylmethacrylat-Blockcopolymere als Template zur Darstellung geordneter Silica-Strukturen
… von analytischen Methoden wie SAXS, T-SAXS, GISAXS, TEM und AFM untersucht. Der Einfluss von Anzahl und Position der funktionellen Gruppen auf die Phasenseparation wurde geprüft. Die dargestellten Blockcopolymere zeigen ein Mikrophasenseparationsverhalten, das weitgehend mit den bereits …
-
The effect of radiation damage by fission fragments on the structural stability and dissolution of the UO2 fuel matrix
The aim of this work was to study the separate effect of fission fragment damage on the structural integrity and matrix dissolution of uranium dioxide in water. Radiation damage similar to fission damage was created by irradiating bulk undoped and doped ‘SIMFUEL’ disks of UO2, undoped bulk CeO2 and …